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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 963 · 40 questions
TalentJR

The fast method (Double up): × 4: double, then double again. × 8: double three times. To double a big number, double the tens and the ones separately and add: double 37 = 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.54 × 8 =
  2. 2.58 × 8 =
  3. 3.14 × 4 =
  4. 4.111 × 4 =
  5. 5.34 × 8 =
  6. 6.53 × 4 =
  7. 7.27 × 8 =
  8. 8.19 × 4 =
  9. 9.68 × 8 =
  10. 10.44 × 4 =
  11. 11.68 × 8 =
  12. 12.143 × 4 =
  13. 13.138 × 4 =
  14. 14.66 × 4 =
  15. 15.58 × 4 =
  16. 16.32 × 4 =
  17. 17.44 × 4 =
  18. 18.30 × 8 =
  19. 19.14 × 4 =
  20. 20.117 × 4 =
  21. 21.60 × 8 =
  22. 22.74 × 8 =
  23. 23.13 × 4 =
  24. 24.52 × 8 =
  25. 25.55 × 4 =
  26. 26.60 × 4 =
  27. 27.142 × 4 =
  28. 28.62 × 8 =
  29. 29.99 × 4 =
  30. 30.35 × 4 =
  31. 31.72 × 8 =
  32. 32.70 × 4 =
  33. 33.43 × 8 =
  34. 34.36 × 8 =
  35. 35.45 × 4 =
  36. 36.21 × 4 =
  37. 37.76 × 4 =
  38. 38.71 × 4 =
  39. 39.98 × 4 =
  40. 40.79 × 4 =

Answer key

  1. 432
  2. 464
  3. 56
  4. 444
  5. 272
  6. 212
  7. 216
  8. 76
  9. 544
  10. 176
  11. 544
  12. 572
  13. 552
  14. 264
  15. 232
  16. 128
  17. 176
  18. 240
  19. 56
  20. 468
  21. 480
  22. 592
  23. 52
  24. 416
  25. 220
  26. 240
  27. 568
  28. 496
  29. 396
  30. 140
  31. 576
  32. 280
  33. 344
  34. 288
  35. 180
  36. 84
  37. 304
  38. 284
  39. 392
  40. 316

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